Answer: Post-traumatic stress disorder (PTSD)
Step-by-step explanation:
Post-traumatic stress disorder (PTSD) is a mental disorder in which an individual experiences dreams, flashbacks and nightmares about any terrifying situation that he/she has experienced or seen.This creates a feeling of anxiety ,depression, sleeplessness and unwanted thoughts.
According to the situation mentioned in question, Taryn is experiencing post-traumatic stress disorder. After the assaulted movement that took place with her, she got terrified and thus experiences nightmares.She is also not able to sleep properly due to this.